Furnace-door.



J. A. SWINDELL.

FURNACE DOOR.

APPLICATION FILED 13110.12, 1913.

1,098,993. Patented June 2, 1914.

z% 3mm $m.

UNITED STATES PATENT OFFICE.

Jenn ALBERT swiNnnLL, or PITTSBURGH, PENNSYLVANIA.

FURNACE-DOOR.

To all whom it may concern:

Be it known that I, JOHN ALBERT SWIN- DELL, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Furnace-Doors, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a plan View showing furnaces having my improved doors applied thereto, and also showing more or less diagrammatically the apparatus for handling the doors; and Fig. 2 is a perspective view of a portion of one of the doors.

My invention has relation to certain new and useful improvements in furnace doors; and more particularly to the doors used on steel furnaces, such as the charging doors of open hearth furnaces. Doors of this class are large and heavy, frequently weighing in the neighborhood of two thousand pounds. Owing to the great heat to which they are subjected, they frequently burn out and require to be removed and replaced. Owing to their great weight the operation of removing a door from its mounting on the furnace and replacing it is a somewhat diflicult operation as heretofore practised. Furnaces of the class to which my invention particularly relates usually employ in connection therewith charging machines for charging the furnaces. These machines are provided with a movable ram having at its free end a suitable form of head for engagement with the socket of a charging box or other part to be introduced into and removed from the furnace. These rams are maniplated in a well known manner to enthe charging box, carry it into the furnace, discharge the contents of the box and then withdraw it. The boxes are provided with suitable sockets with which the heads of the rams are engaged during this operation.

In accordance with my invention I provide the doors of a furnace with sockets on their outer sides of such a character that they can be readily engaged by the ram of the charging machine used in connection with the furnaces. In this manner, when it is necessary to mount or dismount a door, the ram of the charging machine is engaged with the socket on the door in precisely the Specification of Letters Patent.

Application filed December 12, 1913.

Patented June 2, 1914. Serial No. 806,223.

same manner that it is engaged with a charging box. The doors can in this manner be very quickly and readily mounted and dismounted.

Referring to the accompanying drawings the numeral 2 designates furnaces having the charging doors 8.

4t designates the track upon which the charging machine 5 is mounted to travel back and forth along the furnaces.

6 is the ram of the charging machine, having a head 7 of the usual character adapted to the charging boxes employed.

I provide each of the doors 3 on its outer side with a socket 8 which is similar in form to the sockets on the charging boxes so that any door may be readily engaged and lifted by the ram. The inner wall of the socket is formed with the usual hole or recess 9 to engage the usual projection on the end of the ram to hold the ram in engagement with the socket while lifting.

It will be understood that the exact form of the socket may be varied to suit the particular charging machine employed in any particular case. The socket which I have shown is of a form commonly employed on furnace charging boxes. It will also be understood that any suitable charging ma chine, either of the type shown or of the overhead traveling type, may be employed. Inasmuch as these charging machines are well known in the art, a detailed description thereof is unnecessary.

The advantages of my invention will be readily appreciated by furnace men since it provides a very simple means for handling heavy furnace doors, and with practically no additional expense in the cost of the door or other equipment.

lVhat I claim is:

A charging door for furnaces, having its outer side formed with a socket for detach able engagement with the ram. of a furnace charging machine, whereby said door may be placed upon and removed from its mount ings on the furnace by the use of said charging machine, substantially as described.

In testimony whereof, I have hereunto set my hand.

JOHN ALBERT Sl/VINDELL.

Witnesses:

Gno. I-I. PARMELEE, H. M. ConwIN.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

